From: Yong Wu <yong.wu@mediatek.com>
To: Matthias Brugger <matthias.bgg@gmail.com>
Cc: Joerg Roedel <joro@8bytes.org>, Will Deacon <will@kernel.org>,
<iommu@lists.linux-foundation.org>,
<linux-mediatek@lists.infradead.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com>,
<mingyuan.ma@mediatek.com>, <yf.wang@mediatek.com>,
<libo.kang@mediatek.com>, <chengci.xu@mediatek.com>,
<youlin.pei@mediatek.com>, <anan.sun@mediatek.com>,
<xueqi.zhang@mediatek.com>, Guenter Roeck <groeck@chromium.org>,
Dan Carpenter <dan.carpenter@oracle.com>
Subject: Re: [PATCH v2 2/5] iommu/mediatek: Add error path for loop of mm_dts_parse
Date: Thu, 23 Jun 2022 10:12:31 +0800 [thread overview]
Message-ID: <561adc680c9af8e8813baf698f2f6ba67ce046e9.camel@mediatek.com> (raw)
In-Reply-To: <22c40a7f-d759-5b4a-f554-cf679102d91f@gmail.com>
On Thu, 2022-06-16 at 15:49 +0200, Matthias Brugger wrote:
>
> On 16/06/2022 07:42, Yong Wu wrote:
> > The mtk_iommu_mm_dts_parse will parse the smi larbs nodes. if the
> > i+1
> > larb is parsed fail(return -EINVAL), we should of_node_put for the
> > 0..i
> > larbs. In the fail path, one of_node_put matches with
> > of_parse_phandle in
> > it.
> >
> > Fixes: d2e9a1102cfc ("iommu/mediatek: Contain MM IOMMU flow with
> > the MM TYPE")
> > Signed-off-by: Yong Wu <yong.wu@mediatek.com>
> > ---
> > drivers/iommu/mtk_iommu.c | 21 ++++++++++++++++-----
> > 1 file changed, 16 insertions(+), 5 deletions(-)
> >
> > diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
> > index 3b2489e8a6dd..ab24078938bf 100644
> > --- a/drivers/iommu/mtk_iommu.c
> > +++ b/drivers/iommu/mtk_iommu.c
> > @@ -1071,12 +1071,12 @@ static int mtk_iommu_mm_dts_parse(struct
> > device *dev, struct component_match **m
> >
>
> Don't we need to call the goto also on error case of:
>
> larbnode = of_parse_phandle(dev->of_node, "mediatek,larbs", i);
Thanks very much.
exactly right. I will add in next version.
> Regards,
> Matthias
next prev parent reply other threads:[~2022-06-23 2:24 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-16 5:41 [PATCH v2 0/5] iommu/mediatek: Improve safety from dts Yong Wu
2022-06-16 5:41 ` [PATCH v2 1/5] iommu/mediatek: Use dev_err_probe to mute probe_defer err log Yong Wu
2022-06-16 13:28 ` Matthias Brugger
2022-06-16 5:42 ` [PATCH v2 2/5] iommu/mediatek: Add error path for loop of mm_dts_parse Yong Wu
2022-06-16 8:59 ` Robin Murphy
2022-06-16 10:08 ` Yong Wu
2022-06-16 10:31 ` Robin Murphy
2022-06-23 1:54 ` Yong Wu
2022-06-23 10:08 ` Robin Murphy
2022-06-16 13:49 ` Matthias Brugger
2022-06-23 2:12 ` Yong Wu [this message]
2022-06-16 5:42 ` [PATCH v2 3/5] iommu/mediatek: Validate number of phandles associated with "mediatek, larbs" Yong Wu
2022-06-16 5:42 ` [PATCH v2 4/5] iommu/mediatek: Improve safety for mediatek, smi property in larb nodes Yong Wu
2022-06-16 5:42 ` [PATCH v2 5/5] iommu/mediatek: Remove a unused "mapping" which is only for v1 Yong Wu
2022-06-16 12:03 ` AngeloGioacchino Del Regno
2022-06-16 13:56 ` Matthias Brugger
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